Genetic optimization of modulation characteristics for two twisted nematic liquid crystal spatial light modulators

Thu Lan Kelly, Jesper Munch

Research output: Contribution to journalConference article


A single twisted nematic liquid crystal spatial light modulator may suffer from coupled amplitude modulation and a phase modulation capability of less than 2π, although almost all panels can achieve π. Two twisted nematic liquid crystal panels can be combined in an optical system to produce a total phase modulation of at least 2π, and a minimal coupled amplitude modulation. A genetic algorithm is used to optimize the combined modulation characteristics of two liquid crystal panels in a multiplicative architecture. Simulation results and experimental verification are presented which show a substantial reduction in the combined amplitude modulation, and a total phase modulation of 2π.

Original languageEnglish
Pages (from-to)515-523
Number of pages9
JournalOptical and Quantum Electronics
Issue number5
Publication statusPublished - 1 Jan 1999
Externally publishedYes
EventProceedings of the 1997 11th Australian Optical Society Conference - Adelaide, SA, Aust
Duration: 10 Sep 199712 Sep 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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